golang list struct sort 自定义排序

package main

import (
    "fmt"
    "sort"
)

type employee struct {
    name   string
    salary int
}

type employeeList []employee

func (e employeeList) Len() int {
    return len(e)
}

func (e employeeList) Less(i, j int) bool {
    return e[i].salary > e[j].salary
}

func (e employeeList) Swap(i, j int) {
    e[i], e[j] = e[j], e[i]
}

func main() {
    eList := []employee{
        employee{name: "John", salary: 3000},
        employee{name: "Bill", salary: 4000},
        employee{name: "Sam", salary: 1000},
    }
    sort.Sort(employeeList(eList))
    for _, employee := range eList {
        fmt.Printf("Name: %s Salary %d\n", employee.name, employee.salary)
    }
}
Output:

Name: Bill Salary 4000
Name: John Salary 3000
Name: Sam Salary 1000